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Thread: 1:9.5 twist, 7WSM projectiles

  1. #1
    Grunt konrad's Avatar
    Join Date
    Mar 2010
    North Puget Sound, Washington State

    Default 1:9.5 twist, 7WSM projectiles

    It looks like I will be assembling some rounds for my brother’s 7mmWSM.
    It is in the A-bolt Browning and has a 1:9.5 twist rate.
    He wants to use the most heavily constructed projectile available (for elk).

    The questions are:
    What bullet weight will fly well?
    What velocity should I be “aiming” for?
    Which powders have worked well in the past for “heavy for caliber” loads in the 7WSM?

    Thanks guys,

  2. #2
    runfiverun runfiverun's Avatar
    Join Date
    Dec 2007
    soda springs idaho


    the old standards work well in the 7 short.
    4831 and rl-19 were the two i used most. but i would look at rl-22.
    most of the short mags do their best work [accuracy wise] near the top end velocity wise.
    i can't help with the bullet construction but the premiums like swift [a- frames] fly well and are pretty tough.
    i only used hornady in mine and the interlock 139's for elk & deer. and the rem 140's for plinking and stuff.
    i sold mine when i realized it done no more than my 7x57 i.c.l. and the win was not as well made as the old push feed.
    i have a bunch of new brass in idaho thats been trimmed and such.

  3. #3
    Great Master
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    May 2021
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BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
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